发表机构
Università degli Studi dell’Insubria; INFN, Sezione di Milano; Università di Genova; CNR-SPIN（因斯布鲁克大学; 意大利国家核物理研究所米兰分部; 热那亚大学; 意大利国家研究委员会自旋物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究解析证明量子谐振子与玻色子环境耦合中，初始滑移动力学产生的瞬态关联是实现量子姆潘巴效应的关键，忽略该贡献会完全抑制异常弛豫。
AI 中文摘要
我们研究了量子姆潘巴效应，即初始远离平衡的系统比初始更接近平衡的系统弛豫得更快的现象，该效应出现在线性耦合到玻色子环境的量子谐振子中。从不同温度下的因子化热态出发，我们推导了量子姆潘巴效应发生的精确解析判据，该判据也适用于通常考虑的弱耦合和马可夫近似之外的情形。最重要的是，我们表明该效应由系统-环境相互作用的突然开启所产生的初始滑移动力学所实现。忽略这一贡献会完全抑制异常弛豫，从而将瞬态系统-环境关联识别为量子姆潘巴效应背后的关键要素。
英文摘要
We investigate the quantum Mpemba effect, whereby a system initially farther from equilibrium relaxes faster than one initially closer to equilibrium, emerging in a quantum harmonic oscillator linearly coupled to a bosonic environment. Starting from factorized thermal states at different temperatures, we derive exact analytical criteria for the occurrence of the quantum Mpemba effect valid also beyond the typically considered weak-coupling and Markovian approximations. Most importantly, we show that the effect is enabled by the initial-slip dynamics generated by the sudden switch-on of the system-bath interaction. Neglecting this contribution completely suppresses the anomalous relaxation, identifying transient system-bath correlations as the key ingredient underlying the quantum Mpemba effect.
CommentsMain: 10 pages, 4 figures. Supplemental Material: 24 pages, 1 figure
